From Imperial Wiki
- The Vengeance is substantially larger than the Constitution-class Enterprise
- The Vengeance has advanced phasers that can be fired while travelling at warp speed. This feature is unique to the Vengeance (so far) in the new movie continuity.
- The Vengeance is heavily automated, allowing it to be operated with a minimal crew. It can actually be operated for short periods by a single person, although additional crew are needed for maintenance functions.